"grey zones" . . "over the Aegean" . "Turkey violated Greek airspace" . . "claims in the Aegean Sea" . . "delimitation of borders" . "violation of Greece's" . "Aegean dispute" . . . . . . "Turkish challenges to Greek sovereignty rights" . "the disputed Aegean region" . "Turkey's incursions into Greek maritime zones" . "dispute between Turkey and Greece" . "The problem has grown." . "Aegean" . . . "claims" . . "disputed region" . . . "Aegean with Turkey" . . . . . "Greece" . "disputes in the Aegean Sea" . . . "Aegean problems" . "disputed" . . "territorial waters" . "sovereignty rights in the Aegean" . . "Unauthorised Drilling Activities in the Eastern Mediterranean" . . "1987" . "Aegean dispute" . "sovereignty of certain islets" . "maritime boundaries with Greece" . "political disputes" . .